Hollow Brick Calculator

How to use it

1. Calculate gross wall area: 8m × 2.8m = 22.4m²
2. Deduct openings: 22.4m² - 2.5m² = 19.9m² net area
3. Calculate bricks: 19.9m² × 32/m² × 1.05 waste = 669 bricks
4. Calculate mortar: 19.9m² × 8 kg/m² = 159 kg mortar

Common mistakes

• ⚠️ Not descontar huecos of puertas and ventanas of the calculation
• ⚠️ Not Consider waste of the 5-10% per cortes and roturas
• ⚠️ Use efficiency incorrecto according to tamaño of the brick (12×24×5cm ≈ 32 ud/m²)

Worked example

Calculate hollow bricks for a wall 8m x 2.8m deducting 2.5m² for openings.

For a wall of {area_bruta} m² gross ({area_neta} m² net) you need {ladrillos_ud} hollow bricks and {mortar_kg} kg of mortar.

Input guide